Senior C++ Software Engineer - Systematic Trading

Senior C++ Software Engineer - Systematic Trading 12-month contract - £600 to £850/day (Inside IR35) Global Trading & Supply | High-Performance Systematic Trading Technology As a Senior C++ Software Engineer , you'll work closely with technologists, quants, and traders to design, optimise, and scale our in-house global derivatives and systematic trading platform . You'll operate across the full stack of proprietary trading technology - from ultra-low-latency exchange connectivity to strategy engines - with the autonomy and impact expected in a high-performance engineering culture. You will be instrumental in ensuring ultra-low latency, deterministic performance, reliability, and scalability while shaping the next generation of our systematic and algorithmic trading systems . What You'll Work On Exchange Connectivity Develop software that interacts with major global futures exchanges using native APIs & protocols (FIX, WebSocket, HTTP). Maintain and extend testing suites ensuring robust, consistent connectivity. Optimise exchange communication through Kernel bypass, TLS tuning, and advanced networking techniques. Study and align with detailed exchange behaviours and microstructure. Work across C++, Rust, Python, and Typescript as needed. Systematic & Algorithmic Trading Build and enhance systematic trading strategies from quant and trader requirements. Improve performance, reliability, and stability of the systematic and algorithmic trading engines. Enhance monitoring, observability, and analytics for Real Time trading operations. Diagnose and resolve production issues (crashes, logic inconsistencies, latency bottlenecks). Support systematic strategy deployment, backtesting workflows, and release preparation. Technical Experience 5+ years post-graduation C++ in financial markets , ideally in high-performance, low-latency environments. Strong background in multi-threaded, asynchronous, and distributed systems. Deep knowledge of algorithms, data structures, and performance optimisation. Understanding of the full exchange-traded derivatives life cycle. Strong Scripting & automation skills (Python, PowerShell, C#, SQL, etc.). Proven experience with application deployment best practices and proactive system monitoring. I ndustry Experience 8+ years in Trading, Systematic Trading, Capital Markets, or Investment Banking environments. Familiarity with global futures exchanges and their native protocols. Exposure to systematic or quantitative trading environments highly desirable.